java script menu with a twist!

Hello everbody! I was planning to create a "special" kind of homepage which basically is just one big picture for each site/part of it. Just a centered jpg. However part of that jpg is also a menu (at the top) and I was wondering how to make it so that when you put your mouse over any of the topics another small picture appears below it with various links to click (this box again would be a picture) I�ve come across a lot of powerful javascripts for html-like menues but so far none that might help me with this problem. Would be great if any of you guys could help me with either a few lines of code or maybe a lnk to an actionscript that might be useful! The problem I see (I�m a real java newbie though!) is that with most scripts I�ve seen I would have to make the whole 800x600 page a java object. Or do I need to create a few java scripts- one for each menu to appear? What is important to me is that I need to be able to specify the coordinates where the boxes will appear inside the big image/site background (which automatically gets centered). It shouldn�t pop up somewhere else than below the topic you selected